CRUSTAL DEFORMATION AND MOUNTAINS

Question 1

The Himalayas formed by

Answer 1

collision

Question 2

Brittle deformation

Answer 2

occurs when many atomic bonds are broken quickly and rock pieces separate.

Question 3

Which of the following conditions will tend to make rocks change by plastic deformation rather than by brittle deformation?

Answer 3

Slowly applied stress

Question 4

The North American craton consists of a

Answer 4

shield and platform.

Question 5

What is the change in shape produced by stress called?

Answer 5

Strain

Question 6

A series of anticlines and synclines forms as a result of

Answer 6

compression

Question 7

The structure pictured in the diagram is a(n)

Answer 7

dome

Question 8

The Andes Mountains are an example of mountains formed by

Answer 8

subduction

Question 9

The process of mountain belt formation is called

Answer 9

orogeny

Question 10

A horizontal line on Earth’s surface has a plunge of

Answer 10

0°.

Question 11

Identify the structure in the image.

Answer 11

Syncline

Question 12

What type of fault does the diagram show?

Answer 12

Dip-slip fault, normal

Question 13

Igneous rock can form during mountain building when

Answer 13

flux melting occurs at convergent boundaries.

Question 14

Stress

Answer 14

generated during orogeny can be different at various locations.

Question 15

What type of fault does the diagram show?

Answer 15

Left-lateral strike-slip fault

Question 16

You are trying to determine the type of structure on a geologic map. You note that the oldest rocks are located in the center of the structure. What feature is this?

Answer 16

anticline

Question 17

Which of these is NOT one of the components of deformation?

Answer 17

dissolution

Question 18

What type of fault results from tension?

Answer 18

normal

Question 19

Right-lateral and left-lateral are both examples of __________ faults.

Answer 19

strike-slip

Question 20

Under which of the following conditions would a body of rock be more likely to exhibit plastic behavior?

Answer 20

high temperature

Question 21

A body of rock affected by compression will likely undergo

Answer 21

shortening

Question 22

Folds are most often associated with __________ stress.

Answer 22

compressional

Question 23

Which of the following occurs when rocks are pulled apart?

Answer 23

tension

Question 24

Which of the following faults could result from both strike-slip and dip-slip stresses?

Question 25

An episode of mountain building is termed a(n)

Answer 25

orogeny

Question 26

A body of rock affected by tension will likely undergo

Question 27

A fold shaped like an elongated arch is a(n)

Answer 27

syncline

Question 28

What kind of stress results in the lengthening of rock?

Answer 28

tensional

Question 29

Tension stress is primarily associated with which type of faults?

Question 30

Which of the following shows a plunging fold?

Answer 30

C

Question 31

Normal faults are generally the result of __________ stress.

Answer 31

tensional

Question 32

Under which condition would a body of rock be most likely to exhibit brittle behavior?

Answer 32

low temperature

Question 33

The formation of joints in a rock in response to tension is an example of

Answer 33

brittle deformation.

Question 34

You are trying to determine the type of structure on a geologic map. You note that the youngest rocks are located in the center of the structure. What feature is this?

Answer 34

syncline

Question 35

Forces that act to elongate the crust are associated with ________.